HP 17bII+ - Manual (Page 140)

140 10: Running Total and Statistics
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
statistics for just one list of data, specify the same list for both x and y.
2. To see n, press   .
3. Press  again to display the summation menu, and press the
menu label for the value you want.
Doing Other Calculations with SUM Data
If you would like to do other statistical calculations with SUM data
besides those in the CALC menu, you can do so by writing your own
Solver equation. There are Solver functions that can access data stored
in SUM lists, and there is a summation function that can combine all or
part of the values stored in specific lists.
Refer to “Accessing CFLO and SUM Lists from the Solver” in chapter 12.